0
Design Innovation Paper

Design Method for Screw Forming Cutter Based on Tooth Profile Composed of Discrete Points

[+] Author and Article Information
Qian Tang

State Key Laboratory of Mechanical Transmission,
Chongqing University,
174 Shazheng Street,
Shapingba, Chongqing 400030, China
e-mail: tqcqu@cqu.edu.cn

Yuanxun Zhang

College of Aerospace Engineering,
Chongqing University,
174 Shazheng Street,
Shapingba, Chongqing 400030, China
e-mail: yuanxun.zhang@yahoo.com

Zhenwei Jiang

State Key Laboratory of Mechanical Transmission,
Chongqing University,
174 Shazheng Street,
Shapingba, Chongqing 400030, China
e-mail: jzw50123@126.com

Di Yan

State Key Laboratory of Mechanical Transmission,
Chongqing University,
174 Shazheng Street,
Shapingba, Chongqing 400030, China
e-mail: mcyandi@163.com

1Corresponding author.

Contributed by the Power Transmission and Gearing Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received July 16, 2014; final manuscript received May 6, 2015; published online June 16, 2015. Assoc. Editor: Zhang-Hua Fong.

J. Mech. Des 137(8), 085002 (Aug 01, 2015) (9 pages) Paper No: MD-14-1424; doi: 10.1115/1.4030648 History: Received July 16, 2014; Revised May 06, 2015; Online June 16, 2015

The forming method has been widely used for manufacturing screw rotors with helical profile. This paper takes the manufacturing of screws for screw pumps as an example and uses the cubic spline interpolation method to obtain the tooth profile of the screw forming cutter according to the tooth profile at any end section of screws composed of discrete points and based on the principle of gearing mesh. Furthermore, this paper studies the space enveloping and geometric characteristics between the screw and cutter during the manufacturing process, combines the shape of the contact line, which is generated due to the cooperative motion of the machine tool, screw, and cutter, with spatial location parameters, and thus innovatively proposes a design method for the screw forming cutter based on discrete points, namely, the form-position geometric method (FPGM). It can be seen after comparing the proposed method with the principle of gear meshing that the cutter-workpiece enveloping solution model, simplified by the FPGM, can overcome the key technical difficulty, i.e., it is difficult to accurately calculate the cusp of the tooth curve; meanwhile, the proposed method can improve the precision of the cutter tooth profile design. Finally, the feasibility and superiority of FPGM are verified by experiments.

FIGURES IN THIS ARTICLE
<>
Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Coordinate systems of disk cutter and workpiece

Grahic Jump Location
Fig. 2

Solving process of forming cutter for tooth profile at discrete point based on meshing principle

Grahic Jump Location
Fig. 3

Flow chart of solving cutters by (a) gear meshing principle method and (b) FPGM

Grahic Jump Location
Fig. 4

Spatial location of contact line

Grahic Jump Location
Fig. 5

Spatial relationship between cutting plane and workpiece

Grahic Jump Location
Fig. 6

Relationship between cutting plane and workpiece

Grahic Jump Location
Fig. 7

Comparison of (a) FPGM and (b) meshing principle

Grahic Jump Location
Fig. 8

Profile of screw forming cutter

Grahic Jump Location
Fig. 9

Manufacturing effect of screw tooth profile

Grahic Jump Location
Fig. 10

Circumferential deviation of actual screw tooth profiles

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In